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Visceral pain

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https://www.readbyqxmd.com/read/29785336/targeting-the-microbiota-from-irritable-bowel-syndrome-to-mood-disorders-focus-on-probiotics-and-prebiotics
#1
M M Pusceddu, K Murray, M G Gareau
Purpose of review: The crosstalk between the gut and the brain has revealed a complex communication system responsible for maintaining a proper gastrointestinal homeostasis as well as affect emotional mood and cognitive functions. Recent research has revealed that beneficial manipulation of the microbiota by probiotics and prebiotics represent an emerging and novel strategy for the treatment of a large spectrum of diseases ranging from visceral pain to mood disorders. The review critically evaluates current knowledge of the effects exerted by both probiotics and prebiotics in irritable bowel syndrome (IBS) and mood disorders such as anxiety and depression...
March 2018: Current Pathobiology Reports
https://www.readbyqxmd.com/read/29784661/linaclotide-attenuates-visceral-organ-crosstalk-role-of-guanylate-cyclase-c-activation-in-reversing-bladder-colon-cross-sensitization
#2
Ehsan N Mohammadi, Casey O Ligon, Ada Silos-Santiago, Pei Ge, Caroline Kurtz, Carolyn Higgins, Gerhard Hannig, Beverley Greenwood-Van Meerveld
INTRODUCTION: Bladder pain syndrome (BPS) is poorly understood, however there is evidence of a female predominance and co-morbidity with irritable bowel syndrome (IBS). Here we test the hypothesis that linaclotide, a guanylate cyclase-C (GC-C) agonist approved for the treatment of IBS with constipation (IBS-C), may represent a novel therapeutic for BPS acting through a mechanism involving an inhibition of visceral organ cross sensitization. METHODS: In female rats, infusion of dilute protamine sulfate (PS) into the bladder was employed to induce bladder and colonic hypersensitivity...
May 21, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29784431/-continuous-quadratus-lumborum-type-ii-block-in-partial-nephrectomy
#3
Rita Graça, Pilar Miguelez, José Miguel Cardoso, Miguel Sá, Joana Brandão, Célia Pinheiro, Duarte Machado
BACKGROUND AND OBJECTIVES: Quadratus lumborum block was first described in 2007 and currently there are descriptions of its achievement through four different injection points. This blockage provides abdominal wall and visceral analgesia, and one of its mechanisms is the dispersion of the local anesthetic into the paravertebral space. We describe the performance of a continuous quadratus lumborum type II block for postoperative analgesia in a partial nephrectomy. CASE REPORT: A 64-year-old woman, scheduled for partial left laparoscopic nephrectomy...
May 18, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29781158/role-of-brain-derived-neurotrophic-factor-in-the-pathogenesis-of-distention-associated-abdominal-pain-in-bowel-obstruction
#4
Y Fu, Y M Lin, J H Winston, R Radhakrishnan, L-Y M Huang, X Z Shi
BACKGROUND: Previous studies found that visceral sensitivity is increased in bowel obstruction (BO). We hypothesized that mechanical stress-induced expression of BDNF in smooth muscle cells (SMC) of the distended bowel plays a critical role in visceral hypersensitivity in BO by altering voltage-gated K+ channel (Kv ) activity in sensory neurons. METHODS: Partial colon obstruction was maintained in rats for 7 days. Colon-projecting neurons in the dorsal root ganglia (DRG, T13 to L2) were isolated for electrophysiological and gene expression studies...
May 21, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29774181/embolization-with-ethylene-vinyl-alcohol-copolymer-onyx-%C3%A2-for-peripheral-hemostatic-and-non-hemostatic-applications-a-feasibility-and-safety-study
#5
Romaric Né, Olivier Chevallier, Nicolas Falvo, Olivier Facy, Pierre-Emmanuel Berthod, Christophe Galland, Sophie Gehin, Marco Midulla, Romaric Loffroy
Background: Onyx® is a liquid embolic agent, which is approved for the treatment of cerebral vascular lesions but still rarely used in peripheral interventional radiology. The goal of this study is to report the feasibility and safety of embolization with Onyx® for peripheral hemostatic and non-hemostatic endovascular procedures. Methods: Retrospective study of all consecutive patients who underwent visceral or peripheral embolization with Onyx® for hemostatic or non-hemostatic purpose in our department between May 2014 and November 2016...
April 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29762333/hemodynamic-shock-caused-by-tension-pneumoperitoneum-in-a-5-year-old-girl
#6
Marie-Sophie Zentar, Laureline Berteloot, Naziha Khen Dunlop, Olivier Bustarret, Bénédicte Pigneur, Gérard Cheron, François Angoulvant
Tension pneumoperitoneum is a relatively rare occurrence in the pediatric population. However, tension pneumoperitoneum is associated with significant morbidity and mortality if it is not promptly diagnosed and treated. A 5-year-old girl was admitted to emergency department with abdominal pain. She was in shock, and the radiograph film of the abdomen revealed a voluminous tension pneumoperitoneum. Aggressive fluid challenges were performed in intensive care followed by urgent laparotomy. Primary abdominal compartment due to trapped gas caused a decreased venous return and visceral perfusion...
May 14, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29757091/striving-for-liminality-eating-disorders-and-social-suffering
#7
Karin Eli
In this article, I argue that eating disorders constitute a form of social suffering, in which sufferers embody liminality as a response to, and a reflection of, oppressive sociality, structural violence, and institutional constraints. Based on the illness narratives of people with anorexia nervosa, bulimia nervosa, and their subclinical variants in Israel, the analysis draws the experiential, the social, and the structural into critical focus. These narratives, which delineate lived experiences of self-starving, bingeing, and purging, and the attendant viscerality of hunger, fullness, and emptiness, reveal how participants developed an embodied drawing inward and away, being at once within and without society for extended periods of time, through eating disordered practices...
January 1, 2018: Transcultural Psychiatry
https://www.readbyqxmd.com/read/29752180/-177-lu-psma-617-radionuclide-treatment-in-patients-with-metastatic-castration-resistant-prostate-cancer-lupsma-trial-a-single-centre-single-arm-phase-2-study
#8
Michael S Hofman, John Violet, Rodney J Hicks, Justin Ferdinandus, Sue Ping Thang, Tim Akhurst, Amir Iravani, Grace Kong, Aravind Ravi Kumar, Declan G Murphy, Peter Eu, Price Jackson, Mark Scalzo, Scott G Williams, Shahneen Sandhu
BACKGROUND: Progressive metastatic castration-resistant prostate cancer is a highly lethal disorder and new effective therapeutic agents that improve patient outcomes are urgently needed. Lutetium-177 [177 Lu]-PSMA-617, a radiolabelled small molecule, binds with high affinity to prostate-specific membrane antigen (PSMA) enabling beta particle therapy targeted to metastatic castration-resistant prostate cancer. We aimed to investigate the safety, efficacy, and effect on quality of life of [177 Lu]-PSMA-617 in men with metastatic castration-resistant prostate cancer who progressed after standard treatments...
May 7, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29746088/structure-activity-studies-reveal-the-molecular-basis-for-gabab-receptor-mediated-inhibition-of-high-voltage-activated-calcium-channels-by-%C3%AE-conotoxin-vc1-1
#9
Mahsa Sadeghi, Bodil B Carstens, Brid P Callaghan, James T Daniel, Han Shen Tae, Tracey O'Donnell, Joel Castro, Stuart M Brierley, David J Adams, David J Craik, Richard J Clark
α-Conotoxins are disulfide-bonded peptides from cone snail venoms and are characterized by their affinity for nicotinic acetylcholine receptors (nAChR). Several α-conotoxins with distinct selectivity for nAChR subtypes have been identified as potent analgesics in animal models of chronic pain. However, a number of α-conotoxins have been shown to inhibit N-type calcium channel currents in rodent dissociated dorsal root ganglion (DRG) neurons via activation of G protein-coupled GABAB receptors (GABABR). Therefore it is unclear whether activation of GABABR or inhibition of α9α10 nAChRs is the analgesic mechanism...
May 10, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29733841/abdominal-skeletal-muscle-activity-precedes-spontaneous-menstrual-cramping-pain-in-primary-dysmenorrhea
#10
Folabomi A Oladosu, Frank F Tu, Saaniya Farhan, Ellen F Garrison, Nicole D Steiner, Genevieve E Roth, Kevin M Hellman
BACKGROUND: Dysmenorrhea is a pervasive pain condition that affects 20-50% of reproductive-aged women. Distension of a visceral organ, such as the uterus, could elicit a viscero-motor reflex resulting in involuntary skeletal muscle activity and referred pain. Although referred abdominal pain mechanisms can contribute to visceral pain, the role of abdominal muscle activity has not yet been investigated within the context of menstrual pain. OBJECTIVE: The goal of this study is to determine if involuntary abdominal muscle activity precedes spontaneous episodes of menstrual cramping pain in dysmenorrheic women and if naproxen administration affects abdominal muscle activity...
May 4, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29733020/spontaneous-true-gastroduodenal-artery-aneurysm-rupture-after-an-inguinal-hernia-operation
#11
Haldun Kar, Volkan Çakır, Hasan Fatih Tanyeli, Salih Can Çelik, Özgün Akgül
Gastroduodenal artery aneurysms are a very rare subtype of visceral artery aneurysms. These are divided into two groups as true and pseudoaneurysms. Pseudogastroduodenal artery aneurysms, which develops secondary to pancreatitis, is seen more frequently, whereas the true aneurysms are much less common. Spontaneous rupture may be fatal. Sudden onset of abdominal pain and hypotension are the most important clinical findings. Endovascular interventions are the gold standard for diagnosis. Regardless of their sizes, GDA aneurysms should be treated as soon as possible...
March 2018: Chirurgia
https://www.readbyqxmd.com/read/29732433/bowel-injury-in-lumbar-spine-surgery-a-review-of-the-literature
#12
REVIEW
Ioannis Siasios, Kunal Vakharia, Asham Khan, Joshua E Meyers, Samantha Yavorek, John Pollina, Vassilios Dimopoulos
Although rarely documented in the medical literature, bowel perforation injury can be a severe complication of spine surgery. Our goal was to review current literature regarding this complication and study possible methods of avoidance. We conducted a literature search in the PubMed database between January 1960 and March 2016 using the terms abrasion, bowels, bowel, complication, injury, intestine, intra-abdominal sepsis/shock, perforation, lumbar, spine, surgery, visceral. Diagnostic criteria, outcomes, risk factors, surgical approach, and treatment strategy were the parameters extracted from the search results and used for review...
March 2018: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29720377/analgesic-effects-of-electroacupuncture-at-st25-and-cv12-in-a-rat-model-of-postinflammatory-irritable-bowel-syndrome-visceral-pain
#13
Xianwei Zhu, Zhibin Liu, Yifei Qin, Wenmin Niu, Qiang Wang, Lu Li, Jing Zhou
BACKGROUND: Treatment with electroacupuncture (EA) at ST25 and CV12 has a significant analgesic effect on postinflammatory irritable bowel syndrome (PI-IBS) visceral pain. Enterochromaffin (EC) cells and serotonin (5-hydroxytryptamine (5-HT)) are important in the development of visceral hyperalgesia. OBJECTIVE: To investigate the analgesic effect and underlying mechanisms of EA at ST25 and CV12 on the treatment of trinitrobenzene sulfonic acid (TNBS)-induced PI-IBS visceral hyperalgesia in rats...
May 2, 2018: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/29718879/methamphetamine-consumption-and-life-threatening-abdominal-complications-a-case-report
#14
Xiaojing Zou, Haiyan Huang, Le Yang, Hong Liu, Yongfeng Li, Qin Xia, Shiying Yuan, Shanglong Yao
RATIONALE: Methamphetamine (METH) abuse is increasing rapidly all over the world and becoming a significant public health concern in China. However, abdominal complications secondary to METH abuse are usually overlooked. We describe an unusual case of gangrenous cholecystitis and small intestinal ischemia due to METH abuse. PATIENT CONCERNS: In this report, a 44-year-old male patient with abdominal pain and hematochezia has a history of crystal meth abuse. DIAGNOSIS: The patient was diagnosed as septic shock, paralytic ileus, gangrenous cholecystitis, and small intestinal ischemia due to METH abuse based on computed tomography (CT) scan, endoscopy examination, laparotomy, and pathology...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29713558/effect-of-4dryfield-%C3%A2-ph-a-novel-adhesion-barrier-on-recurrence-of-intestinal-adhesions-after-extensive-visceral-adhesiolysis
#15
Gerhard Blumhardt, Matthias Haas, Stefanie Polte
Background: Adhesions occur after up to 97% of abdominal interventions causing chronic pain, infertility, and intestinal obstruction. Various concepts to prevent adhesions have been presented but mostly either have low efficacy or are not applicable in resective intestinal surgery or incomplete hemostasis. In this retrospective one-center clinical trial, the course of patients with extensive abdominal adhesiolysis and application of a recent starch-based formulation, 4DryField PH (4DF), is analyzed...
2018: Case Reports in Surgery
https://www.readbyqxmd.com/read/29712513/-express-prenatal-maternal-stress-induces-visceral-hypersensitivity-of-adult-rat-offspring-through-activation-of-cystathionine-%C3%AE-synthase-signaling-in-primary-sensory-neurons
#16
Hong-Jun Wang, Xue Xu, Rui-Hua Xie, Yun-Yun Rui, Ping-An Zhang, Xiao-Jue Zhu, Guang-Yin Xu
Irritable bowel syndrome (IBS) is a disorder of unknown etiology characterized by widespread, chronic abdominal pain associated with altered bowel movements. Increasing amounts of evidence indicate that stressors presented during gestational periods could have long-term effects on the offspring's tissue structure and function, which may predispose to gastrointestinal diseases. The aim of the present study is designed to determine whether prenatal maternal stress (PMS) is a adverse factor affecting gastrointestinal sensitivity and to investigate possible mechanisms underlying PMS-induced visceral hypersensitivity in adult offspring...
January 1, 2018: Molecular Pain
https://www.readbyqxmd.com/read/29708037/thoracic-endovascular-aortic-repair-to-treat-uncomplicated-stanford-type-b-aortic-dissection-the-surgeon-s-dilemma-to-preventing-future-complications
#17
Piergiorgio Tozzi
Uncomplicated type B aortic dissections have traditionally been managed non-operatively with aggressive blood pressure control. However, the best medical treatment is associated with a considerable risk of disease progression to complicated dissection or aneurysmal degeneration of the affected aortic segment. Thoracic endovascular aortic repair could prevent long-term complications but, because the dissected aorta is vulnerable, it is a high-risk procedure performed in asymptomatic patient. Therefore, endovascular treatment is not a solution for all patients and it should be performed only in the subgroup prone to developing progression of the disease and future complications...
June 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29704486/identification-of-experimental-bladder-sensitivity-among-dysmenorrhea-sufferers
#18
Kevin M Hellman, Avisek Datta, Nicole D Steiner, Julia N Kane Morlock, Ellen F Garrison, Daniel J Clauw, Frank F Tu
BACKGROUND: Dysmenorrhea is a common risk factor for chronic pain conditions including bladder pain syndrome. Few studies have formally evaluated asymptomatic bladder pain sensitivity in dysmenorrhea, and whether this largely reflects excess pelvic symptom reporting due to comorbid psychological dysfunction. OBJECTIVE: We sought to determine whether bladder hypersensitivity is more common among women reporting moderate or greater dysmenorrhea, without chronic pain elsewhere, after accounting for anxiety and depression...
April 25, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29704480/protective-effect-and-mechanism-of-injection-of-glutamate-into-cerebellum-fastigial-nucleus-on-chronic-visceral-hypersensitivity-in-rats
#19
Ling-Ling Zhen, Bei Miao, Ying-Ying Chen, Zhen Su, Man-Qiu Xu, Sujuan Fei, Jianfu Zhang
AIMS: We investigated the effects of chemical stimulation of cerebellum fastigial nucleus (FN) on the chronic visceral hypersensitivity (CVH) and its possible mechanism in rats. MAIN METHODS: We stimulated the FN by microinjecting glutamate into the FN, in order to explore whether the cerebellum fastigial nucleus played a role on CVH in rat. The model of CVH was established by colorectal distension (CRD) in neonatal rats. Abdominal withdrawal reflex (AWR) scores, pain threshold, and amplitude of electromyography (EMG) were used to assess the hyperalgesia...
April 25, 2018: Life Sciences
https://www.readbyqxmd.com/read/29703377/the-parabrachial-nucleus-cgrp-neurons-function-as-a-general-alarm
#20
REVIEW
Richard D Palmiter
The parabrachial nucleus (PBN), which is located in the pons and is dissected by one of the major cerebellar output tracks, is known to relay sensory information (visceral malaise, taste, temperature, pain, itch) to forebrain structures including the thalamus, hypothalamus, and extended amygdala. The availability of mouse lines expressing Cre recombinase selectively in subsets of PBN neurons and viruses for Cre-dependent gene expression is beginning to reveal the connectivity and functions of PBN component neurons...
May 2018: Trends in Neurosciences
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